Common English Prefixes: Meaning, Examples and Word Building
Prefixes can suggest meaning, but context and the full dictionary entry remain essential.
Clear Explanation
• un- commonly marks negation or reversal.
• re- often suggests again or back.
• pre- commonly relates to before.
• mis- can signal wrong or badly.
• in-, im-, il-, and ir- often create negative forms shaped by the following sound.
Examples
We previewed the lesson.
Please rewrite the final paragraph.
The result was impossible to verify.
Quick Comparison
Common Mistake
Do not assume a prefix plus any base automatically creates a standard English word.
Frequently Asked Questions
Can a prefix change part of speech?
Some do, but many common prefixes mainly change meaning.
Why does in- become im-?
The form can assimilate to a following sound, as in impossible.